CN115928721B - Friction type double-thread connecting assembly and assembled building - Google Patents
Friction type double-thread connecting assembly and assembled building Download PDFInfo
- Publication number
- CN115928721B CN115928721B CN202310233887.8A CN202310233887A CN115928721B CN 115928721 B CN115928721 B CN 115928721B CN 202310233887 A CN202310233887 A CN 202310233887A CN 115928721 B CN115928721 B CN 115928721B
- Authority
- CN
- China
- Prior art keywords
- nut
- sleeve
- rod
- wall
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a friction type double-thread connecting assembly and an assembled building, relates to the field of precast concrete pile connecting members, and aims to solve the problems of insufficient tension and ductility of the existing connecting structure, and adopts the technical scheme that: install middle nut and combination nut in the sleeve, middle nut fixes the inner wall in sleeve opening part, middle nut inner wall is round platform form setting and narrower one end is located the opening part, the combination nut outer wall is contradicted at the inner wall of middle nut and can take place the relative slip, the combination nut is provided with two at least and evenly distributed at the internal surface of middle nut, there is the clearance between the adjacent combination nut, the inner wall of combination nut has the screw thread and with the external screw thread adaptation of screw thread friction lever, be provided with the elastic component in the sleeve and be used for contradicting the combination nut. The scheme of the invention can form larger biting force, improve the connection strength and the tensile force, simultaneously can be ductile damaged under the condition of displacement, ensure the safety of the building and meet the assembly requirement of the building engineering.
Description
Technical Field
The invention relates to a precast concrete pile connecting member, in particular to a friction type double-thread connecting assembly and an assembled building.
Background
The prefabricated building is formed by partially prefabricating concrete members through workshop production and processing, transporting to a construction site and assembling on site, and can be divided into an overground assembling part and an underground assembling part according to the assembling environment of the prefabricated members. The types of ground assembled prefabricated components mainly include: external wall panels, internal wall panels, superimposed sheets, balconies, air conditioning panels, stairways, precast beams, precast columns, precast shear walls and the like; underground assembly portion: and (5) prefabricating the concrete pile. The method has the advantages that a large amount of assembly operations are performed on site, the environmental pollution such as sewage, dust emission, photochemistry and the like on the site is reduced, the labor intensity is greatly reduced compared with the original cast-in-situ operation, and the method meets the construction requirements of green buildings. In the assembled building, the prefabricated columns, the prefabricated shear walls and the prefabricated concrete piles are connected up and down, and the adopted connecting components are important parts; the connection members are considered not only for the stability of the connection, but also for their tensile properties. After the precast concrete members are connected, the connecting piece groups on the members form a closed locking state, and under the action of earthquake force and wind load, larger vertical tension force component can be generated, and the connecting members play a relatively important role in engagement, so that separation or delay of the building members is avoided as much as possible, and the escape time of personnel is ensured.
In the prior art, the structural assembly shown in fig. 1 is mainly used for connection, and mainly comprises a high-strength connecting rod 1, wherein the tail end of the connecting rod 1 is provided with a protruding step 2, the connecting rod is installed in a first building component, a sleeve 3 is usually preset in a second building component connected with the first building component, and a limiting baffle 4 is arranged in the sleeve 3; when the first building component is connected with the second building component, the connecting rod 1 stretches into the sleeve 3 and breaks through the limiting baffle 4, and then the end part of the limiting baffle 4 is abutted against the end surface of the step 2 of the connecting rod 1 to form an abutting joint, so that the connecting and tensile resisting effects are achieved; however, there are some problems with such designs: when a large vertical tension component is generated under the action of earthquake force and wind load, brittle fracture occurs when the component breaks through the maximum resistance tension of the connecting component, and the first building component and the second building component are directly separated, so that danger is caused.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a friction type double-thread connecting component which can improve the pulling resistance of the connection and provide a ductile failure state so as to avoid brittle fracture.
The technical aim of the invention is realized by the following technical scheme: a friction-type double-threaded connection assembly, characterized in that: the friction device comprises a threaded friction rod and a sleeve, wherein at least one end of the sleeve is provided with an opening for the threaded friction rod to extend in; install middle nut and combination nut in the sleeve, middle nut fixes the inner wall in sleeve opening part, middle nut inner wall is round platform form setting and narrower one end is located the opening part, the combination nut outer wall is contradicted at the inner wall of middle nut and can take place the relative slip, the combination nut is provided with at least two and evenly distributed at the internal surface of middle nut, has the clearance between the adjacent combination nut, the inner wall of combination nut has the screw thread and with the external screw thread looks adaptation of screw thread friction lever, be provided with the elastic component in the sleeve and be used for contradicting the combination nut.
The invention is further provided with: a reduction tray is additionally arranged between the combined nut and the elastic piece.
The invention is further provided with: the reduction tray is in a circular ring shape, one side surface of the reduction tray is in contact with the end surfaces of the middle nut and the combined nut, the other side surface of the reduction tray is in direct contact with the elastic piece, and the center part of the reduction tray is provided for the threaded friction rod to pass through.
The invention is further provided with: the middle nut is provided with a step at the narrower end of the middle nut for abutting with the end face of the sleeve.
The invention is further provided with: the inner wall of the middle nut is provided with three parts, namely a first bending part positioned at the narrower end, a second bending part positioned at the middle part and a third bending part positioned at the wider end; the first bending part bends towards the hollow part of the middle nut, and the third bending part bends towards the solid part of the middle nut; the outer wall of the combined nut is matched with the inner wall of the middle nut.
The invention is further provided with: the outer ring hoop of the combined nut is provided with an elastic hoop.
The invention is further provided with: an annular groove is formed in the outer ring of the combined nut and used for limiting displacement of the elastic hoop.
The invention is further provided with: the inner wall of the combined nut is provided with a reinforcing rib which is used for extending into the annular groove to form abutting connection with the elastic hoop.
The invention is further provided with: and a locking structure is further arranged between the reduction tray and the threaded friction rod.
The invention is further provided with: the reduction tray is provided with a telescopic resistance rod, a resistance hole is formed in the threaded friction rod, and the resistance rod can extend into the resistance hole to form a locking structure.
The invention is further provided with: the reducing tray is provided with a mounting hole, the resistance rod is arranged in the mounting hole and can extend out of the mounting hole to enter the resistance hole, the end face of the middle nut is provided with a thimble, and the thimble is used for extruding the resistance rod to extend out of the mounting hole.
The invention is further provided with: and a spring is further arranged in the mounting hole and used for being connected with the resistance rod to enable the resistance rod to be contracted in the mounting hole.
The invention is further provided with: the thimble and the resistance rod are respectively provided with an inclined plane which is mutually matched, and when the reduction tray is in interference connection with the middle nut, the inclined plane of the thimble is in interference with the inclined plane of the resistance rod so that the resistance rod extends out of the mounting hole.
The invention is further provided with: the middle nut is connected with the sleeve through threads.
The invention is further provided with: and a reinforcing part is arranged on the outer side of the part, connected with the middle nut, of the sleeve.
The invention also provides an assembled building, and the friction type double-thread assembly is used, so that the assembled building can obtain better pulling resistance.
In summary, the invention has the following beneficial effects:
1, a threaded friction rod can be easily and intuitively inserted into a combined nut, a reasonable fault tolerance range is provided, and the success rate of group rod anchoring is improved;
2, under the action of external force, the friction rod and the combined nut are combined to form a staged combined force (friction force and end bearing force), so that the whole connecting system is in a ductile failure state, but not brittle failure;
3, combining the friction rod and the combined nut, forming a mutual engagement state between the threads, and processing the threads in strength to form a huge engagement force, so that the connection strength and the tension force of the assembly are increased, and the engineering requirement is met;
4, through the end bearing force of the step and the matching of the inner side of the middle nut and the bending part at the outer side of the combined nut, the biting force can be improved more and more by extruding the middle nut;
5, the elastic hoops can effectively avoid the dispersion of the combined threads, so that the elastic hoops have more stable resultant force on the friction threaded rod;
4, the resistance rod can extend into the threaded friction rod to form a locking structure, so that the overall pulling resistance is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of the structure of the first embodiment;
FIG. 3 is a schematic diagram of a second embodiment;
fig. 4 is a schematic structural view of a third embodiment;
FIG. 5 is a schematic diagram of a fourth embodiment;
fig. 6 is a schematic diagram of a fourth embodiment;
fig. 7 is a schematic diagram of a third embodiment;
FIG. 8 is an enlarged schematic view of portion A of FIG. 7;
FIG. 9 is a schematic diagram of a fifth embodiment of an installation process;
FIG. 10 is a schematic diagram of a second embodiment of the installation process;
FIG. 11 is a schematic diagram of a third embodiment of the installation process;
FIG. 12 is a schematic diagram of a fifth embodiment of an installation process;
fig. 13 is a schematic diagram of an installation process of the fifth embodiment.
In the figure: 1. a connecting rod; 2. protruding the step; 3. a sleeve; 4. a limiting baffle; 5. a threaded friction rod; 6. a sleeve; 7. a middle nut; 8. a combination nut; 9. an elastic member; 10. a reduction tray; 11. a resistance rod; 12. resistance holes; 13. a thimble; 14. a reinforcing part; 15. a step; 16. a first bending part; 17. a second bending part; 18. a third bending part; 19. an elastic band; 20. an annular groove; 21. prefabricating a concrete member; 22. a main rib; 23. fitting the sleeve.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Embodiment one:
the friction type double-thread connecting component mainly comprises two parts, namely a thread friction rod 5 and a sleeve 6, wherein one end surface of the sleeve 6 is at least provided with an opening, and one end of the thread friction rod 5 is provided with external threads; an intermediate nut 7 is arranged in the sleeve 6, and the intermediate nut 7 can be fixed at the opening of the sleeve 6 in a threaded connection manner.
The inner wall of the intermediate nut 7 is arranged in a hollow round table shape, and the narrower end face of the intermediate nut is kept flush with one end face of the opening of the sleeve 6, the aperture of the end face is smaller than that of the other end, and as shown in fig. 2, the upper end face is smaller, and the lower end face is larger.
The combined nuts 8 are further installed in the middle nut 7, at least two combined nuts 8 are arranged, three combined nuts can be arranged generally, the three combined nuts are arranged in a fan shape, the outer surfaces of the combined nuts can be attached to the inner wall of the middle nut 7, internal threads are arranged on the inner surfaces of the combined nuts and are used for being in threaded connection with the external threads of the threaded friction rod 5, gaps exist between the adjacent combined nuts 8, when the combined nuts 8 are pressed inwards by the threaded friction rod 5, the combined nuts 8 move towards one end with larger aperture of the middle nut 7, the gaps between the adjacent combined nuts 8 are increased, and when the threaded friction rod 5 is installed in place and pulled back, the combined nuts 8 retract to one end with smaller aperture of the middle nut 7, and the gaps between the adjacent combined nuts 8 are decreased.
And still install elastic component 9 in sleeve 6, elastic component 9 can select the spring to use, and the one end of spring is contradicted on the inner wall of sleeve 6, and the other end is contradicted with combination nut 8.
Of course, in order to better apply acting force to the combination nut 8, a reduction tray 10 may be additionally arranged between the combination nut 8 and the elastic member 9, the reduction tray 10 is in a ring shape, the middle is hollow and is provided for the threaded friction rod to pass through, one end surface of the reduction tray 10 is in contact with the middle nut 7 and the combination nut 8, and the other end is in contact with the elastic member 9.
Embodiment two:
the second embodiment differs from the first embodiment in that: as shown in fig. 3, a step 15 is integrally formed at the narrower end of the intermediate nut 7, and the step 15 is used for enabling the end surface of the step 15 to be abutted with the end surface of the sleeve 6 when the intermediate nut 7 is mounted on the sleeve 6, so as to limit the continued penetration of the intermediate nut 7; the inner wall of the middle nut 7 is provided with three parts, namely a first bending part 16 positioned at a narrower end, a second bending part 17 positioned at a middle part and a third bending part 18 positioned at a wider end, wherein the first bending part 16 bends towards the hollow part of the middle nut 8, and the third bending part 18 bends towards the solid part of the middle nut 7; the outer wall of the combined nut 8 is matched with the inner wall of the middle nut 7; the structure is that the side wall of the original hollow round table of the middle nut 7 is provided with three bending parts, the inclination of the three bending parts is inconsistent, and the outer wall of the combined nut 8 is matched with the three bending parts, so that when the combined nut 8 is abutted against the middle nut 7, the corresponding first bending part 16, second bending part 17 and third bending part 18 can provide different locking forces to limit the combined nut 8; so can further strengthen the interference power between middle nut 7 and the combination nut 8, when screw friction rod 5 outwards pulls out, combination nut 8 can receive the interference effect of first kink 16, second kink 17 and third kink 18 to tighten up more, thereby more extrusion force to screw friction rod 5.
Embodiment III:
the third embodiment differs from the first embodiment in that: as shown in fig. 4, an elastic hoop 19 is arranged on the outer wall hoop of the combined nut 8, and can be a common steel wire ring with elastic expansion force; in order to better limit the elastic hoop 19, an annular groove 20 can be formed on the outer wall of the combined nut 8, namely, when at least two combined nuts 8 are encircled, the annular grooves 20 are formed on the outer sides of the combined nuts, the elastic hoop 19 can be contracted in the annular grooves 20, so that the up-and-down sliding of the elastic hoop 19 is limited, in order to further increase the stability of the elastic hoop 19, reinforcing ribs can be arranged on the inner wall of the middle nut 7, the positions of the reinforcing ribs can be just matched with the annular grooves 20, and when the threaded friction rod 5 is just tightened in the sleeve 6, the reinforcing ribs extend into the annular grooves 20 to abut against, so that the combined nuts 8 are better limited; of course, the elastic hoop 19 can be magnetized, so that the elastic hoop can be better adsorbed in the annular groove 20; the stability of combination nut 8 can effectively be improved to this scheme, because at the in-process that screw thread friction rod 5 stretched into sleeve 6, combination nut 8 can receive the extrusion and take place the dispersion, through the effect of elasticity ferrule 19, can effectively improve the stability of combination nut 8 mutually supporting this moment to can play better restriction effect to screw thread friction rod 5.
Embodiment four:
the fourth embodiment differs from the first embodiment in that: as shown in fig. 5, 6, 7 and 8, in order to further increase the connection stability between the threaded friction rod 5 and the sleeve 6, a resistance rod 11 is further provided on the reduction tray 10, a resistance hole 12 is further provided on the side surface of the threaded friction rod 5, and the resistance rod 11 can extend into the resistance hole 12 to lock the threaded friction rod 5 and the sleeve 6.
The concrete structure of the device can be as follows: the mounting hole has been seted up at the inside wall of reduction tray 10, resistance bar 11 installs in the mounting hole, and set up the spring between resistance bar 11 and mounting hole and make resistance bar 11 keep contracting in the mounting hole, so can not receive the influence when conveniently threaded friction bar 5 stretches into, and still set up the through-hole perpendicularly on the mounting hole, the terminal surface fixed mounting in the great one end in aperture of middle nut 7 has thimble 13, thimble 13 can stretch into the through-hole and contradict extrusion resistance bar 11, in order to make resistance bar 11 more convenient stretch out the mounting hole, set up the terminal surface of thimble 13 and the terminal surface of resistance bar 11 into the inclined plane of mutually supporting, when the inclined plane extrusion resistance bar 11 of 13 needles of top can support resistance bar 11 like this, thereby make resistance bar 11 take place lateral shifting and stretch out the mounting hole, and the resistance hole 12 of seting up of threaded friction bar 5 moves to this position just, make resistance bar 11 can stretch into resistance hole 12, thereby restriction threaded friction bar 5 can not break away from sleeve 6.
When the friction type double-thread connection assembly is actually used, as shown in fig. 5, the threaded friction rod 5 and the sleeve 6 are separated and respectively installed in two materials to be connected, then the threaded friction rod 5 is inserted into the sleeve 6, namely, as shown in fig. 6, when the threaded friction rod 5 stretches into the sleeve 6, the combined nut 8 is firstly extruded, the combined nut 8 moves towards the larger end of the middle nut 7 and stretches out of the middle nut 7, at the moment, the reduction tray 10 slides in the sleeve 6, the elastic member 9 is compressed until the threaded friction member 5 is installed in place, at the moment, the combined nut 8 is retracted into the middle nut 7 again under the action of tightening threads and is in close contact with the middle nut 7, and a tighter fit is realized under the interference action of the elastic member 9, and the thimble 13 is separated from the reduction tray 10 when the reduction tray 10 slides in the sleeve 6, at this time, the resistance rod 11 is retracted in the mounting hole under the action of the spring, when the threaded friction rod 5 is mounted in place, the reduction tray 10 is contacted with the end face of the middle nut 7 under the action of the elastic piece 9, so that the thimble 13 stretches into the mounting hole to abut against the resistance rod 11, the resistance rod 11 stretches out of the mounting hole to stretch into the resistance hole 12 against the tensile force of the spring, namely, as shown in fig. 5, the resistance rod 11 is transversely arranged between the threaded friction rod 5 and the reduction tray 10, so that when the threaded friction rod 5 is pulled, the limit of the tightening acting force of the combination nut 8 is not only provided, but also the limit of the pulling force of the combination nut is provided, and when a larger pulling force is generated, the pulling force is provided between the threaded friction rod 5 and the combination nut 8 through threaded fit, so that the pulling force is in the ductile failure process, brittle fracture does not directly occur, but ductile failure has the advantage of prolonging the time of separation fracture, so that enough buffer time can be provided when the ductile fracture is applied to the field of construction, and people can make emergency response conveniently.
In the above embodiment, of course, in order to increase the structural strength of the sleeve 6, a reinforcing portion 14 may be further provided on the outer side of the portion where the intermediate nut 7 is mounted, and the reinforcing portion 14 may have a thickness thicker than that of the other portion of the sleeve 6.
Fifth embodiment:
the assembled building is assembled by using the structure of the first, second, third or fourth embodiment, as shown in fig. 9 to 13, and fig. 9 is a state before the whole concrete member is assembled; FIG. 10 is a view of the assembled integral concrete element; FIGS. 11, 12 and 13 are detail views before, during and after assembly, respectively; the threaded friction rod is arranged in a precast concrete member, and the concrete member can be a solid or hollow rectangular or tubular or polygonal concrete pile; referring to fig. 11, an adapter sleeve 23 may be fitted to the threaded friction rod 5, the adapter sleeve 23 being embedded in the precast concrete member 21, combined with a main rib 22, which may be a prestressed steel rod or a threaded steel or a steel strand or carbon fiber steel, etc.; when the threaded friction rod 5 needs to be installed, one end of the threaded friction rod 5 can be connected in the adaptive sleeve 23 in a threaded manner, and of course, the part, connected with the threaded friction rod 5, of the adaptive sleeve 23 can be provided with a reinforcing part on the outer side of the adaptive sleeve to be structurally reinforced, so that the structural strength of the adaptive sleeve 23 is increased, and the sleeve 6 is embedded in the corresponding other precast concrete member 21 and combined with the main rib 22 in the precast concrete member 21; then, the two precast concrete members 21 are combined, so that the threaded friction rod 5 is directly inserted into the sleeve 6 to form locking and fixing, and when the two building components are subjected to external force to have a detachment trend, the threaded friction rod can be tightly fixed with the sleeve, and the detachment phenomenon is difficult to occur; it is of course also possible to fix the threaded friction lever 5 and the sleeve 6 in two components to be combined separately by other mounting means, and then to mount and combine them by means of insertion and extraction.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (4)
1. A friction-type double-threaded connection assembly, characterized in that: comprises a threaded friction rod (5) and a sleeve (6), wherein at least one end of the sleeve (6) is provided with an opening for the threaded friction rod (5) to extend in; the novel anti-collision device is characterized in that an intermediate nut (7) and a combined nut (8) are installed in the sleeve (6), the intermediate nut (7) is fixed on the inner wall of the opening of the sleeve (6), the inner wall of the intermediate nut (7) is arranged in a round table shape, one narrower end of the inner wall of the intermediate nut (7) is located at the opening, the combined nut (8) is provided with at least two inner surfaces which are uniformly distributed on the intermediate nut (7), gaps are reserved between adjacent combined nuts (8), the outer wall of the combined nut (8) can be abutted against the inner wall of the intermediate nut (7) and can slide relatively, threads are formed on the inner wall of the combined nut (8) and are matched with external threads of the threaded friction rod (5), and an elastic piece (9) is arranged in the sleeve (6) and used for abutting the combined nut (8);
a reduction tray (10) is additionally arranged between the combined nut (8) and the elastic piece (9);
the reduction tray (10) is arranged in a circular ring shape, one side surface of the reduction tray is in contact with the end surfaces of the middle nut (7) and the combined nut (8), the other side surface of the reduction tray is in direct contact with the elastic piece (9), and the center part of the reduction tray (10) is provided for the threaded friction rod (5) to pass through;
a telescopic resistance rod (11) is arranged on the reduction tray (10), a resistance hole (12) is formed in the side surface of the threaded friction rod (5), and the resistance rod (11) can extend into the resistance hole (12) to lock the threaded friction rod (5) and the sleeve (6);
the inner side wall of the reduction tray (10) is provided with a mounting hole, the resistance rod (11) is mounted in the mounting hole and can extend out of the mounting hole to enter the resistance hole (12), a spring is arranged between the resistance rod (11) and the mounting hole to enable the resistance rod (11) to keep contracting in the mounting hole, a through hole is vertically formed in the mounting hole, one end face of the middle nut (7) with a larger hole diameter is provided with a thimble (13), and the thimble (13) extends into the through hole to press the resistance rod (11) in a propping mode so that the resistance rod (11) extends out of the mounting hole; the thimble (13) and the resistance rod (11) are respectively provided with mutually matched inclined planes, and when the reduction tray (10) is in interference connection with the middle nut (7), the inclined planes of the thimble (13) are in interference with the inclined planes of the resistance rod (11) so that the resistance rod (11) extends out of the mounting hole.
2. A friction-type double threaded connection assembly according to claim 1, characterized in that: the middle nut (7) is connected with the sleeve (6) through threads.
3. A friction-type double threaded connection assembly according to claim 2, characterized in that: a reinforcing part (14) is arranged on the outer side of the connecting part of the sleeve (6) and the middle nut (7).
4. An assembled building, characterized in that: use of a friction type double threaded connection assembly as defined in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310233887.8A CN115928721B (en) | 2023-03-13 | 2023-03-13 | Friction type double-thread connecting assembly and assembled building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310233887.8A CN115928721B (en) | 2023-03-13 | 2023-03-13 | Friction type double-thread connecting assembly and assembled building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115928721A CN115928721A (en) | 2023-04-07 |
| CN115928721B true CN115928721B (en) | 2023-06-02 |
Family
ID=85837001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310233887.8A Active CN115928721B (en) | 2023-03-13 | 2023-03-13 | Friction type double-thread connecting assembly and assembled building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115928721B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217976991U (en) * | 2022-07-20 | 2022-12-06 | 福建省华盖机械制造有限公司 | Fastening nut assembly capable of reducing looseness |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120237315A1 (en) * | 2011-03-17 | 2012-09-20 | Ming-Chung Chiu | Floating fastener |
| CN211973851U (en) * | 2019-10-28 | 2020-11-20 | 周兆弟 | Assembled building part |
| CN212688935U (en) * | 2020-04-16 | 2021-03-12 | 海盐机械设备制造有限公司 | Prestressed pipe pile connecting piece |
| CN217105064U (en) * | 2022-04-06 | 2022-08-02 | 衡水百纳机械连接设备有限公司 | Tubular pile connecting assembly |
-
2023
- 2023-03-13 CN CN202310233887.8A patent/CN115928721B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217976991U (en) * | 2022-07-20 | 2022-12-06 | 福建省华盖机械制造有限公司 | Fastening nut assembly capable of reducing looseness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115928721A (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3028668C (en) | Reinforced building wall | |
| DE19947913C2 (en) | Fastening element for attaching loads to a building wall with thermal insulation | |
| CN112982707A (en) | Assembled self-resetting buckling restrained brace | |
| CN113529979A (en) | Exempt from welded rack node reinforced structure | |
| CN115928721B (en) | Friction type double-thread connecting assembly and assembled building | |
| RU2307223C1 (en) | Pole for overhead transmission line cable suspension | |
| CN104675101A (en) | Wall-linking element of scaffold and construction method of wall-linking element | |
| CN110541580A (en) | prestressed carbon fiber plate anchorage device system | |
| CN213741915U (en) | Split type prestressed anchorage utensil | |
| CN111593875A (en) | Supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall | |
| CN111894146A (en) | Prefabricated wallboard splicing piece of assembled based on interior enlarged pipe socket joint | |
| CN108331016B (en) | Prefabricated assembled pipe gallery semi-rigid and semi-flexible type bell and spigot connection structure and method | |
| CN210195260U (en) | Thread assembling type split bolt | |
| CN210637340U (en) | Novel expansion bolt | |
| CN209011313U (en) | A kind of novel prefabricated primary and secondary beam composite joint node | |
| CN213952945U (en) | Safety protection device for overhanging layer of external scaffold | |
| CN108756012B (en) | Tensioning rope connection assembly for connecting concrete wall panels and method of use thereof | |
| CN111779208A (en) | Assembled outer wallboard splicing piece based on prestress tensioning of anchoring end plate | |
| CN220599185U (en) | Reinforcing screw for installing single-side template of constructional column | |
| CN219364955U (en) | Connection structure of concrete truss and floor | |
| CN212836616U (en) | Supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall | |
| CN210976561U (en) | Scaffold frame that can have enough to meet need use is wall structure even | |
| CN108978890A (en) | Novel prefabricated primary and secondary beam composite joint node of one kind and attaching method thereof | |
| CN217711149U (en) | Assembled roof beam-wall connection structure | |
| CN210918330U (en) | Prestressed carbon fiber plate anchorage device system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |